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interesting study in Cephalgia - randomised, cross-over

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Post  egk Sun Jan 16, 2011 2:49 pm

This is a very interesting study based on IGg antibodies. The skin tests at the allergist's office are IGe antibodies. The blood tests for IGg antibodies are commonly considered to be only somewhat reliable, with a tendency to false positives. But they give you a place to start while you undertake the most reliable method, an elimination diet plus a challenge.


Cephalalgia. 2010 Jul;30(7):829-37. Epub 2010 Mar 10.

Diet restriction in migraine, based on IgG against foods: a clinical double-blind, randomised, cross-over trial.


http://www.ncbi.nlm.nih.gov/pubmed/20647174

Alpay K, Ertas M, Orhan EK, Ustay DK, Lieners C, Baykan B.
Istanbul Faculty of Medicine, Department of Neurology, Istanbul, Turkey.

Abstract

INTRODUCTION: It is well-known that specific foods trigger migraine attacks in some patients. We aimed to investigate the effect of diet restriction, based on IgG antibodies against food antigens on the course of migraine attacks in this randomised, double blind, cross-over, headache-diary based trial on 30 patients diagnosed with migraine without aura.

METHODS: Following a 6-week baseline, IgG antibodies against 266 food antigens were detected by ELISA. Then, the patients were randomised to a 6-week diet either excluding or including specific foods with raised IgG antibodies, individually. Following a 2-week diet-free interval after the first diet period, the same patients were given the opposite 6-week diet (provocation diet following elimination diet or vice versa). Patients and their physicians were blinded to IgG test results and the type of diet (provocation or elimination). Primary parameters were number of headache days and migraine attack count. Of 30 patients, 28 were female and 2 were male, aged 19-52 years (mean, 35 +/- 10 years).

RESULTS: The average count of reactions with abnormally high titre was 24 +/- 11 against 266 foods. Compared to baseline, there was a statistically significant reduction in the number of headache days (from 10.5 +/- 4.4 to 7.5 +/- 3.7; P < 0.001) and number of migraine attacks (from 9.0 +/- 4.4 to 6.2 +/- 3.8; P < 0.001) in the elimination diet period.

CONCLUSION: This is the first randomised, cross-over study in migraineurs, showing that diet restriction based on IgG antibodies is an effective strategy in reducing the frequency of migraine attacks.

PMID: 20647174

egk

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Post  MaryAnneLive Sun Jan 16, 2011 2:55 pm

Now that is fascinating.
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Post  egk Sun Jan 16, 2011 7:02 pm

a write up on the study

http://www.nyheadache.com/blog/?p=176

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Post  Paradox Sun Jan 16, 2011 8:42 pm

It is interesting. While the numbers aren't crazy low even one extra day without a m is significant. It will interesting to see what happens with a broader study.
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